Automatic spacing device for plaiting machines



March 18, 1930. G. EZBELENT ET AL 1,751,401

AUTOMATIC SPACING DEVICE FORYLAITING MACHINES Filed June 28. 1926 2 Sheets-Sheet 1 March 18, 1930. G. EZBELENT ET AL AUTOMATIC. SPACING DEVICE FOR PLAITING MACHINES Filed June 28. 1926 2 Sheets-Sheet 2 l/Vl/EN T028 T N 56 a 3 Z i M 5 W; 2 @E/ I device, or the like,

Patented Mar. 18, 1930 ATENT, oFFIcE GEORGES EZBELEN '1. AND ROGER EZBELENT, 0F PARIS, FRANCE AUTOMATIC SPAGING DEVICE FOR'PLAITING MACHINES Application filed June 28, 1926, Serial N'o..119,212, and in France January 28, 1926.

In the operationz of plaiting machines, it

is often desired to leave blank or unplaited areas in the goods betweengthe areas which are plaited, and for this purpose the rollers 5 are rotated for a certain time without the formation of plaits. To produce this result in the known machines, the machine must be stopped, and the rollers are then turned by the usualmeans such as a ratchet and pawl or in certaintypesof machines which are provided with automatic spacing means for producing the blank areas, the machine is allowed to make a certain number of revolutions while the plaiting device has been made inoperative; in this latter case a small amount of the fabric is drawn by the rollers during their intermittent movement at each revolution of the machine until the-requisite blank area is obtained. But in all cases it is necessary to stop the machine or the vplait forming device, and there is danger of producing glossy marks upon the goods, when the latter are made of certain fabrics, by reason of the intermittent motion of the rollers. v

'The present invention has for its object a device whereby this spacing will be automatically obtained at a given time, and will also begiven a variable width, without stop-' ping the rollers during the travel of the unplaited fabric. The said device is chiefly characterized in that the lower roller is adapted to be rotated, independently of the usual rotation for the formation of plaits, by means of a one way device, e. g. a pawl and ratchet device, the actuating member whereof (for'instance the pawl) is adapted to be given a rocking motion of variable amplitude between the formation of two consecutive plaits.

In the appended drawing which is given solely by way of example: u s Fig. 1 is an elevation of the device according to the invention.-

Fig. 2 is an elevation ofa cam with removable bosses for the control of the one way driving device for the roller. I Fig. 3 is a partial sectionon the line AA of Fig. 2.

Fig. 4: is a section on the line BB' of Fig.3.

Fig. 5 is an elevational View of one side'of a plaiting machine. r Fig. .6 is an elevational View of the other side of the same machine provided with the device according to the invention. I

In the construction illustrated, 1 and 2 are the two rollers of the plaiting machine. Said rollers are turned by the usual means for forming plaits such as a ratchet wheel a mounted on one side of the lower roller 2 and a cooperating pawl 6 connected by the links, a, (Z, c, to the knife-carrier f. Said knifecarrier is moved towards and away from the rollers .by -means of. links g, disposed on either side of the machine and pivoted at h, one end of said links being connected to the knife-carrier f and the other end of said links being guided in cams j rotating on the main driving shaft of the machine. The means above described are already known and form no part of the present invention. Another. ratchet wheel 3 is secured to the other side of the lower roller 2 and coaxi'ally therewith is also. mounted apawl-carrier 4. The arm. 6, pivoted on the pin 7, actuatesthe said pawl-carrier through the medium of the link 5. The rocking motion of the said arm isobt-ained by means of the cam or eccentric 8 mounted on the shaft is and towards which the said arm'is constantly urged by the spring 10, andv upon which it is adapted to roll through the medium of-the. roller 9. The link 5 makescontact with a cam or eccentric 11 against which it is'urged by the spring. 12. The rotation of the said cam displaces the pivoting fulcrum of the said link upon the 7 arm 6, whereby the length. of the lever arm, and hence the amplitude of motion of the pawl-carrier at, is changed. The claw 13, pivotally supported by a fixed pin 14:, co-operates with a hook 16'secure'd to or integral with. the arni6, and the free end of an extension of the claw is brought into contact.by the spring l5with a rotary disc 18 provided with bosses 17 and to which acontinuous or intermittent rotation is imparted. When none of the said bosses lowers the claw 13, the latter will engage the hook 16,, and the arm 6 is thus held. If one of the bosses acts uponthe claw 13, the latter will be removed fromthe hook 16 against the action of the spring 15, thus aifording the free rocking motion of the arm 6, so that the roller 2 is rotated by the ratchet and pawl device, thus leaving a blank area in the plaited work.

The disc 18 provided with the bosses 17 controls at the proper time the release of the arm 6; the said disc is preferably constructed as shown in Figs. 2, 3 and l. The disc 18 has formed therein peripheral recesses 19, in variable number, in which are movable rollers 17 forming the removable bosses.

Each of the said rollers is mounted on a shaft 20 and is axiallymovable therewith; the said shaft has an enlarged part 21 having the same cross section as the slot 22 in the wall 23. A spring 2&, bearing at one end upon the wall 23 and at the other upon the inner face of a cap 25 mounted on the end of the shaft 20, urges the roller 17 into contact with the wall 23. When one of the enlarged parts 21 has been turned into coincidence with the slot 22, the corresponding roller will make contact with the wall 23, it being'withdrawn into its inoperative position relatively to the claw 13.

Should all of the rollers 17 on the disc 18 be in the inoperative position, no automatic spacing eifectwill be produced, but if one or more determined rollers are moved into their operative position, one or more spacing eifects are thus produced at the proper time and at the desired place upon the plaited goods.

The unplaited areas resulting therefrom may be made wider or narrower, by varying the fulcrum of the link 5 on the arm 6, this being obtained by the rotation of the cam 11.

Obviously, the present invention is not limited to the hereinbefore described form of construction which is given solely by way of example, and it is susceptible of various modifications in detail without departing from the principle of the invention.

Having now described our invention, what we claim as new and desire to secure by Letters Patent is:

r 1. In a plaiting machine, the combination with a plait producing mechanism adapted to rotate intermittently one roller of the ma chine for spacing two consecutive plaits from each other, of means for imparting to said roller an additional rotative movement and means for adjusting the amplitude of said additional rotative movement quite independently from the plait producing mecha nism.

2. In a plaiting machine, the combination with a plait producing mechanism adapted to rotate intermittently one roller of the machine for spacing two consecutive plaits from each other, of means for imparting to said roller an additional rotative movement consisting of a one way driving device, the driven member of which is operatively connected to said roller and the driving member .of which, quite independent from the plait producing mechanism, comprises a link, an adjustable axle on which said link is adapted to rotate, means independent from the plait producing mechanism for imparting to said axle and to said link a reciprocating movement and means for causing said reciprocating" means to be inoperative.

3. In a plaiting machine, the combination with a plait producing mechanism adapted to rotate intermittently one roller of the machine for spacing two consecutive plaits from each other, of means. for imparting to said 'roller an additional rotative movement consisting of a one way driving device,-the driven member of which is operatively connected to said roller and the driving member of which, quite independent from the plait producing mechanism, comprises a link, an adjustable axle on which said link is adapted to rotate, a pivoting arm, means on said arm adapted to carry said axle of said link a'djustably along said arm, means for pivoting said arm and means for stopping the pivoting movement of said arm.

l. In a plaiting machine, the combination with a plait producing mechanism adapted to rotate intermittently one roller of the ma chine for spacing two consecutive plaits from each other, of means for imparting to said roller an additional rotative movement consisting of a one way driving device, the driven member of which is operatively connected to said roller and the driving member of which, quite independent from the plait producing mechanism, comprises a link, an adj ustable axle on which said link is adapted to rotate, a pivoting arm, means on said-arm adapted to carry said axle of said link adjustably along said arm, a cam adapted to move said axle of said link along said arm, means for pivoting said arm and means for stopping the pivoting movement of said arm. V

5. In a plaiting machine, the combination with a plait producing mechanism adapted 'to rotate intermittently oneroller of the machine for spacing two consecutive plaits from each other, of means for imparting to said roller an additional rotative movement consisting of a one way driving device, the driven member of which is operatively connected to said roller and the driving member of which, quiteindep'endent from the plait producing mechanism, comprises a link, an adjustable axle on which said link is adapted to rotate, a pivoting arm, means on said arm adapted to carry said axle of saidlink adj ustably along said arm, means for pivoting said arm, a hook on said arm, and a rocking claw adapted to engage and hold said hook at will.

6. In a plaiti-ng machine, the combination with a plait producing mechanism adapted to rotate intermittently. one roller of the machine for spacing two consecutive plaits from roller an additional rotative movement con-j sisting of a one way driving device, the driven member of which is operatively connected to said roller andthe driving member of which,

quite independent from the plait producing mechanism, comprises a link, an adjustable axle on which said link is adapted to rotate, v

a pivoting arm, means on said arm adapted to carry said axle of said link adjustably along said arm, means for pivoting said arm, a hook on said arm, a rocking claw adapted to engage and hold said hook, and a rotary cam carrying disc adapted to control the engagement and the disengagement of said claw with said hook.

7. In a plaiting machine as claimed in claim 6, the 'further feature residing in that the cams of said rotary disc are sildably mounted on the same so as to be moved into an operative position for which they encounter the said claw and into an inoperative position, each cam being provided with an enlarged stop part adapted to engage and pass through a corresponding slot in said disc and with a spring whereby each cam is adapted to be maintained in either of its two positions. 7

In testimony whereof we have signed our names to this specification.

GEORGES EZBELENT. ROGER EZBELENT. 

